On Fri, Apr 12, 2024 at 06:21:56AM -0700, jim karlock wrote: > How about the lowest power UPS you can find and replace the little battery > with car battery?
> (car battery should be the kind that doesn't require periodic watering.) Tried that before - car batteries eventually "sulfate", and won't have full capacity years later, when they are unpredictably needed. The LiFePO4 sealed batteries last decades, and are a heck of a lot lighter. Data centers use them, but the technology hasn't trickled down to smaller SOHO users ... or not yet, AFAIK. Hence my question to the list. An array of smaller "lantern format" batteries can be charged one at a time, perhaps at a bicycle-accessible location that still has power when my home doesn't. BTW, I also considered replacing the 12V wall warts on both devices with a direct feed from the 12.8V batteries. However, the electronics in the Optical Network Terminal may be finicky about voltage levels, and I would need to pry open the ONT case to access the internal plug and jack. Thanks for the suggestion; if you've had better long-term success with car battery UPS, tell me more. Keith -- Keith Lofstrom kei...@keithl.com
